-- Copyright (c) 2024 Huawei Technologies Co., Ltd.
-- openUBMC is licensed under Mulan PSL v2.
-- You can use this software according to the terms and conditions of the Mulan PSL v2.
-- You may obtain a copy of Mulan PSL v2 at: http://license.coscl.org.cn/MulanPSL2
-- THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
-- EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
-- MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
-- See the Mulan PSL v2 for more details.

local device_object = require 'mc.mdb.device_tree.device_object'
local dev_object_manage = require 'mc.mdb.device_tree.dev_object_manage'
local utils = require 'device_tree.adapters.power_mgmt.utils'
local utils_core = require 'utils.core'
local skynet = require 'skynet'
local ctx = require 'mc.context'
local log = require 'mc.logging'
local org_freedesktop_dbus = require 'sd_bus.org_freedesktop_dbus'
local protocol = require 'device_tree.adapters.power_mgmt.protocol'
local match_rule = org_freedesktop_dbus.MatchRule
local fw_def = require 'device_tree.adapters.power_mgmt.protocol.upgrade.fw_def'
local debounce = require 'mc.debounce.debounce'

local REMOTE_POWER_MONITOR_SIG_PATH<const> = '/bmc/kepler/power_mgmt/psu'
local is_utf8 = utils_core.utf8_validate

local psu_slot = device_object('PsuSlot')

local FRU_SOURCE<const> = {
    NONE = 0,   -- 0 -- none
    EEPROM = 1, -- 1 -- 读取FRU的源为EEPROM
    PSU = 2     -- 2 -- 读取FRU的源为PSU
}

local PS_MONITOR<const> = {
    VOUT_STATUS   = 0, -- 输出电压状态
    IOUT_STATUS   = 1, -- 输出电流状态
    VIN_STATUS    = 2, -- 输入电压状态
    TEMPER_STATUS = 3, -- 电源温度传感器的状态
    FAN_STATUS    = 4, -- 电源风扇的状态
    CML_STATUS    = 5, -- 命令的状态
    MFR_STATUS    = 6, -- 厂商自定义的状态

    PS_MONITOR_END = 7
}

local PS_PRESENT = {
    PRESENT = 1,
    NOT_PRESENT = 0,
    DEFAULT_PRESENT = 255
}

local IS_NOT_HEALTH<const> = 0xff
local READ_FAIL_DEBOUNCE_COUNT <const> = 3
local E_OK = nil -- 函数执行成功返回nil
local E_FAILED = '' -- 空错误信息
local HEALTH_UPDATE_FAIL <const> = 0
local POWER_WATTS_UPDATE_FAIL <const> = 1
local PLUGIN_DEBOUNCE <const> = 2
-- 电源通讯异常初始值
local COMMUNICATION_STATUS_DEFAULT <const> = -1
local STATUS_WORD <const> = 0
local STATUS_VOUT <const> = 1
local STATUS_IOUT <const> = 2
local STATUS_INPUT <const> = 3
local STATUS_TEMPERATURE <const> = 4
local STATUS_CML <const> = 5
local INVALID_STATUS <const> = -1

local function get_pbit(val)
    return 1 << val
end

function psu_slot:ctor()
    self.protocol = false
    self.onepower_obj = false
    self.last_present = PS_PRESENT.DEFAULT_PRESENT
    self.prop_cb = {}
    self.prop_value = {}
    self.scan_status = 0
    self.ps_id = 0
    self.remote_power_monitor_task = false
    self.read_fail_count = 0
    self.remote_powe_signal = false
    self.last_read_interval = 10
    self.read_interval = 100
    self.is_upgrading = false
    self.monitor = false
    self.init_ok = false
    self.monitor_tasks = {}
    self.output_vol_deb = debounce['MidAvg'].new(4, 11)
    self.comm_status = {
        [HEALTH_UPDATE_FAIL] = COMMUNICATION_STATUS_DEFAULT,
        [POWER_WATTS_UPDATE_FAIL] = COMMUNICATION_STATUS_DEFAULT,
        [PLUGIN_DEBOUNCE] = debounce[debounce.DEBOUNCED_CONT_BIN].new(3, 1, 0)
    }
    self.last_health_status = {
        [STATUS_WORD] = 0,
        [STATUS_VOUT] = 0,
        [STATUS_IOUT] = 0,
        [STATUS_INPUT] = 0,
        [STATUS_TEMPERATURE] = 0,
        [STATUS_CML] = 0
    }
    self.health_status = {
        [STATUS_WORD] = 0,
        [STATUS_VOUT] = 0,
        [STATUS_IOUT] = 0,
        [STATUS_INPUT] = 0,
        [STATUS_TEMPERATURE] = 0,
        [STATUS_CML] = 0,
        failed_flag = false
    }
    self.health_status_debounce = {
        [STATUS_WORD] = debounce[debounce.DEBOUNCED_CONT].new(3, INVALID_STATUS),
        [STATUS_VOUT] = debounce[debounce.DEBOUNCED_CONT].new(3, INVALID_STATUS),
        [STATUS_IOUT] = debounce[debounce.DEBOUNCED_CONT].new(3, INVALID_STATUS),
        [STATUS_INPUT] = debounce[debounce.DEBOUNCED_CONT].new(3, INVALID_STATUS),
        [STATUS_TEMPERATURE] = debounce[debounce.DEBOUNCED_CONT].new(3, INVALID_STATUS),
        [STATUS_CML] = debounce[debounce.DEBOUNCED_CONT].new(3, INVALID_STATUS)
    }
end

function psu_slot:init()
    self.ps_id = self.SlotNumber
    self:declare_method('PowerSupply', 'bmc.dev.power_supply', 'GetReg', function (prop, ...)
        return self.protocol['get_' .. prop](self.protocol, ...)
    end)
    self:declare_method('PowerSupply', 'bmc.dev.power_supply', 'SetReg', function (prop, ...)
        return self.protocol['set_' .. prop](self.protocol, ...)
    end)
end

function psu_slot:is_present()
    return self.Presence == 1
end

function psu_slot:set_sleep_mode(sleep_mode)
    self.protocol:set_sleep_mode(sleep_mode)
    self:next_tick(function ()
        self:get_dynamic_data('sleep_mode')
    end)
end

function psu_slot:set_work_mode(mode)
    self.protocol:set_power_mode(mode)
    self:next_tick(function ()
        self:get_dynamic_data('work_mode')
    end)
end

function psu_slot:set_psu_fan_rpm(mode)
    self.protocol:set_psu_fan_speed_rpm(mode)
end

function psu_slot:get_psu_fan_rpm()
    return self.protocol:get_psu_fan_speed_rpm()
end

function psu_slot:get_psu_register_info(cmd, length)
    return self.protocol:get_psu_register_info(cmd, length)
end

function psu_slot:add_monitor_tasks(cb)
    table.insert(self.monitor_tasks, self:next_tick(cb))
end

function psu_slot:stop_monitor_tasks()
    local ts = self.monitor_tasks
    self.monitor_tasks = {}
    for _, task in pairs(ts) do
        task:stop()
    end
end

function psu_slot:psm_monitor_stop()
    log:notice('ps%d power monitor stop', self.ps_id)
    if self.monitor then
        self.monitor:stop_monitor_tasks()
    end
end

function psu_slot:power_upgrade(upgrade_path, upgrade_process, para_tab)
    self:psm_monitor_stop()
    self:dal_refresh_property('Health', IS_NOT_HEALTH)
    local ok, resp = pcall(function()
        return self.protocol:upgrade(upgrade_path, upgrade_process, para_tab)
    end)
    self:sleep_ms(self.read_interval * 10)
    self:get_power_supply_info('firmware_version')
    self.monitor:update_health_event()
    self:power_monitor_start()
    self:sleep_ms(self.read_interval * 20)
    if not ok then
        error(resp)
    end
    return resp
end

function psu_slot:get_fru_data(value)
    local fru_data = self.protocol:get_fru_data(value)
    self:dal_refresh_property('fru_data', fru_data)
    return fru_data
end

function psu_slot:dal_refresh_property(prop, value)
    self.prop_value[prop] = value
    if not self.prop_cb[prop] then
        return
    end
    for _, cb in pairs(self.prop_cb[prop]) do
        if self.init_ok then
            self:next_tick(cb, value)
        else
            -- init阶段需要把属性刷新完才允许分发到app侧
            cb(value)
        end
    end
end

function psu_slot:get_protocol(physical_interface)
    local protocol_name, req_protocol = protocol(physical_interface)
    if req_protocol then
        self.protocol = req_protocol.new(self, protocol_name)
        self:dal_refresh_property('protocol', protocol_name)
    end
    local base_content = 'device_tree.adapters.14100513_00000001010302057963.'
    local monitor_protocol = {
        -- 电源pmbus协议，为了降低CPU占用率，延长电源信息获取轮训时间，电源功率计入总功率
        psu_pmbus = base_content .. 'psu_pmbus',
        -- 电源砖pmbus协议，为了降低CPU占用率，延长电源信息获取轮训时间，电源砖功率计入总功率
        powerconverter_pmbus = base_content .. 'powerconverter_pmbus',
        -- 电源缓起板，为了降低CPU占用率，延长电源信息获取轮训时间，电源砖功率计入总功率
        pmbus_IT22PEEA = base_content .. 'psu_pmbus',
    }
    local ok, resp = pcall(require, monitor_protocol[physical_interface])
    if ok then
        self.monitor = resp(self)
    else
        log:warn('ps%d cannot find monitor, protocol_name = %s', self.ps_id, protocol_name)
    end
end

local PS_TRY_CNT = 3 -- 重试次数
local PS_TRY_DELAY = 100 -- 重试时间间隔 ms
function psu_slot:get_dynamic_data(prop, retry_times)
    if not self.protocol or not self.protocol['get_' .. prop] then
        return
    end
    retry_times = retry_times or READ_FAIL_DEBOUNCE_COUNT
    local ok, resp
    for _ = 1, retry_times do
        ok, resp = pcall(self.protocol['get_' .. prop], self.protocol)
        if ok then
            if prop == 'output_voltage' then
                resp = self.output_vol_deb:get_debounced_val(resp)
            end
            self:dal_refresh_property(prop, resp)
            return E_OK, resp
        end
        self:sleep_ms(PS_TRY_DELAY)
    end
    return E_FAILED, resp
end

function psu_slot:get_power_supply_info(prop)
    local ret, data = self:get_dynamic_data(prop, PS_TRY_CNT)
    if ret == E_OK then
        return data
    end
    log:error('ps%s read data(%s) failed. resp: %s', self.ps_id, prop, data)
end

function psu_slot:fetch_power_supply_info(physical_interface)
    local ok, resp = pcall(function ()
        self:get_protocol(physical_interface)
    end)
    if not ok then
        self.protocol = false
        self.monitor = false
        log:error('ps%s no protocol(%s). resp: %s', self.ps_id, physical_interface, resp)
        return
    end
    if self.monitor then
        self.monitor:fetch_power_supply_info()
    end
end

function psu_slot:clear_property_fetch_task()
    self.prop_cb = {}
    self.prop_value = {}
end

function psu_slot:fetch_property(prop, cb)
    if not self.prop_cb[prop] then
        self.prop_cb[prop] = {}
    end
    table.insert(self.prop_cb[prop], cb)
end

function psu_slot:power_monitor_start()
    if self.monitor then
        log:notice('ps%d power monitor start', self.ps_id)
        self.monitor:power_monitor_start()
    else
        log:warn('ps%d power monitor start failed', self.ps_id)
    end
end

function psu_slot:get_black_box_data()
    return self.protocol:get_event_log()
end

function psu_slot:presence_detect()
    self:next_tick(function ()
        while true do
            if self.Presence == PS_PRESENT.DEFAULT_PRESENT then
                goto continue
            end
            if self.last_present == PS_PRESENT.DEFAULT_PRESENT then
                self.last_present = self.Presence
                goto continue
            end
            if self:is_present() and self.last_present == PS_PRESENT.NOT_PRESENT then
                utils.operation_log(nil, 'Plug in power supply %s by user', self.ps_id)
            elseif not self:is_present() and self.last_present == PS_PRESENT.PRESENT then
                utils.operation_log(nil, 'Plug out power supply %s by user', self.ps_id)
            end
            self.last_present = self.Presence
            ::continue::
            self:sleep_ms(1000)
        end
    end)
end

function psu_slot:start()
    self:presence_detect()
end

return psu_slot